Packing-gland for hydraulic motors.



W. A. DOBLE.

PACKING GLAND FOR HYDRAULIC MOTORS.

APPLICATION FILED APB.14. 1913.

1,109,826, w Patented Sept 8, 1914.

HIIICHHHWMI HIIQ ,4 TTORNEY.

- v and particularly to a type ofglan-ada'pted adjusted or replaced at a small expense and or sacrificing any advantages of the invenvertical sectional view of the invention, dis- UNITED STATES? PATENT OFFICE;

WILLIAM A. D BLE, or SAN FRANCISCQ, CALIFoIiNIA, ASSIGNOR TO THE PELTON WATER WHEELCOMPANYLOF sAN FRANCISCO, CALIFORNIA, A CORPORATION OF CALIFORNIA.

following is a specification.

The hereinafter described invention -relates to improvements In packin glands,

for use in connection with hydraulic motors, pumps, turbines, or the like, and the invention has for its principalobjects to providea packing so constructed as toflpreventthe; leakage of the water from the 'interiorjof the casing around the shaft; ,to' provide packing so constructed that the same ma-ylbe readily lubricated with water from thecas ing; to provide means for supplyin rwater from the casing to the packing and or' con veying the same 'from' the packin back Qto'f the casing after the packing and s aft havej been lubricated; to constructa packing hay-f ing an air seal therein'which-will prevent the drawing ofair fromfaround the shaft into the casing on the formation of a vacuum in the interior of the casing, and to construct a packing gland having but few parts, which, when the same become worn may be readily without removing the shaft from the casing.

With these and other objects in view, the invention consists in the novel construction and combination of parts hereinafter; described, illustrated in the accompanying drawings and pointed out in the claims here to appended {itibeing understood that vari-' ous changes'in the form, proportion, size and minor de ails of construction, within the scope of the appended claims,- ma be resorted lo without departing from he spirit tion. i

To more fully comprehend the invention reference should be-had to the accompanying drawings wherein is disclosed one form of my invention, and in which- Figure 1 is a view in elevation of a.hydraulic motor with my improved packing gland applied thereto. Fig. 2 is an enlarged closing the shaft, the packing and spacing rings, and the inlet and discharge connec- Specificatioxi of Letters Patent.

tipns from the casing to the packin Fig. 3 is ing ring". 7 A Referring more particularly to the drawi'nLone sidejof the casing. formed fivl thtan outwardly projecting annular 'paqkinglfiange 4 arranged at substantially PACKING-GLAND FOR HYDRAULIC MOTORS.

rt flange. an enlarged view f one of die spacings, wherein like characters of reference designate corrcspondingparts throughout the several views, the reference numeral 1 designates a suitable hydraulic motor casmg, provided with a water inlet 1, and a water outlet '2, and in which is rotatably 'rno unted awheel 3, carried by a shaft 4, one

endcfwhieh" projects through an opening The opening is rightangles to the outer face of the casing eli to: the."v face of the casing, and said flanges provide; an annular recess 5' In which is inigo unt ed'l the alternately disposed annular 'packirigyrings -6, and spacing members 7, whichisurroundfthe shafL-hs'fin Fig. 2 of the drawings ipackin' .stiucte'd' of any suitablepacking ,material,

'HIL'S 6 are conand thespaciiig -members .7 are preferably constructed of brass, andiare formed'with parallel spa eed'sidemenibers ,8, connected intermediate their edges by a transversely extendingmember 9 which provides a substantially H-shaped structure in cross section, and'the member 9 is provided at spaced intervals with suitable openings 10, which permit the passage of a lubricant.- from the outer surface of the recess in which the packing rings and spacing members are positioned to the surface of theshaft. and vice versa.

The packing rings 6 and spacing members 7 are retained in position in their recess about the shaft 4 by the inwardly extending annular flange 11 of the split collar 12, which is received within the outer end of'the packing reces and the collar 12 is maintained in position and drawn toward the end of the I Patented Sept. 8, 1914. Application fiied'A- n 14,191.;v Serial No. 760,858.

iandis formedat its inner end with an annu- 'lar fiange 5 whichextends in a plane paralcommunicates through a bore 16 formed in the lower surface of the bearing flange at, with a water outlet pipe. 17 which leads to the outlet pipe 2; the. seepage water and water admitted for lubrication being drawn from the packing rings through the pipe 17, owing to the same being connected to the outlet pipe 2 in which a -vacuum is present at times.

Fuitaole lubricating grease is supplied through a bore 17 in the bearing flange I by a grease cup 18, and the inner end of said bore prel ably communicates with the intcrior of the annular recess 5 adjacent the outer spacing member 7, the grease forming an air seal at the outer end of the packing, thus preventing the drawing in of air through the parking on the formation of a vacuum in the interior of the casing, and

\ the grease also providing a lubricant for the two outer packing rings.

From the abone construction it will be apparent that a grease lubricant forming an air seal is supplied to the outer packing rings and that a water lubricant is also supplied to the rings and shaft for lubricating the shaft and maintaining the same cool, and that the Water lubricant together with any water that may seep from the interior of the casing varound the shaft is withdrawn from the interior of the bearing and returned to the Water outlet 2 and thus prevented from leaking from be tween the shaft and the fla nge 11 or between the flange 11 and the inner surface of the bearing flange 4. A packing gland has also been provided which will prevent the drawing in of air through the gland 'to the interior of the casing, on the forming of a vacuum therein, caused by the rotation of the Wheel and will prevent the forcing of the water beyond the end of the shaft on a sudden increase of pressure on the interior of the casing. It will also be apparent that any grit or foreign substance which might find its way into the packing will be drawn with the water therefrom.

Having thus described my invention What I claim as new and desire to protect by Letters Patent is 1. In a packing gland of the class described the combination with a packing flange, a shaft extending therethrough, a plurality of disk-shaped rings interposed between said shaft and the packing flange, a plurality of erforated disk-shaped spacing rings arranged in alternate relation with the packing rings, means for admitting grease to that spacing ring adjacent the outer end of the flange, means for delivering a cooling fluid to another of said rings between thefirst mentioned ring and casing, and an outlet for the waste fluid leading from the packing flange, the said grease forming an air seal at the outer end of the flange.

2. In a hydraulic motor, the combination of a substantially cylindrical casing having an inlet in the perihery thereof, an outlet pipe leading from t e side thereof, a rotatable wheel within the casing, the casing having on the side opposite to said inlet conduit a laterally extending packing flange, a shaft for the wheel projecting through said packing flange, a perforated metallic spacing ring interposed between the shaft and packing flange adjacent the side of the casing, a conduit leading from the upper portion of the casing and communicating with said spacing ring through the wall of the flange, a perforated metallic spacing ring arranged to the outside of the first mentioned ring, a

conduit leading from the casing inlet conduit to the lower face of said packing flan e and communicating through the wall of t e I flange withsaid lastmentioned spacing ring, an auxiliary perforated metallic ring arranged to the outside ofthe last mentioned spacing ring, a grease cup positioned on the upper surface of the flange andcommunicating through the Wall of the flange with the auxiliary perforated spacing ring, packing rings arranged between the rings and to the outside of the end ring, and a stuffing gland engaging the end packing.

In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

WILLIAM A. DOBLE.

Witnesses:

HARRY H. To'rrEN, D. B. RICHARDS. 

